import router from './router'
import store from './store'
import {Message} from 'element-ui'
import NProgress from 'nprogress' // progress bar
import 'nprogress/nprogress.css'// progress bar style
import {getToken} from '@/utils/auth' // getToken from cookie
NProgress.configure({showSpinner: false})// NProgress Configuration
// permission judge function
function hasPermission(perms, permissions) {
	if (perms.indexOf('*') >= 0) return true // admin permission passed directly
	if (!permissions) return true
	return perms.some(perm => permissions.indexOf(perm) >= 0)
}

const whiteList = ['/login', '/auth-redirect']// no redirect whitelist
router.beforeEach((to, from, next) => {
	NProgress.start() // start progress bar
	if (getToken()) { // determine if there has token
		/* has token*/
		if (to.path === '/login') {
			next({path: '/'})
			NProgress.done() // if current page is dashboard will not trigger	afterEach hook, so manually handle it
		} else {
			if (store.getters.addRouters.length === 0) { // 判断当前用户是否已拉取完user_info信息
				store.dispatch('GetUserInfo').then(res => { // 拉取user_info
					const perms = store.getters.perms // note: perms must be a array! such as: ['GET /aaa','POST /bbb']
					store.dispatch('GenerateRoutes', {perms}).then(() => { // 根据perms权限生成可访问的路由表
						router.addRoutes(store.getters.addRouters) // 动态添加可访问路由表
						next({...to, replace: true}) // hack方法 确保addRoutes已完成 ,set the replace: true so the navigation will not leave a history record
					})
				}).catch((err) => {
					store.dispatch('FedLogOut').then(() => {
						Message.error(err || 'Verification failed, please login again')
						next({path: '/'})
					})
				})
			} else {
				next()
			}
		}
	} else {
		/* has no token*/
		if (whiteList.indexOf(to.path) !== -1) { // 在免登录白名单，直接进入
			next()
		} else {
			next(`/login?redirect=${to.path}`) // 否则全部重定向到登录页
			NProgress.done() // if current page is login will not trigger afterEach hook, so manually handle it
		}
	}
})
router.afterEach(() => {
	NProgress.done() // finish progress bar
})
